Power
Integrations (Nasdaq: POWI),
maker of the world’s most efficient, longest-lasting off-line LED driver
ICs, today announced a reference design kit for a 150 W, 48 V power
supply for LED streetlights and other industrial/infrastructure lighting
systems. The driver circuit described in RDR-292
is more than 93% efficient at 230 VAC input and above 91% at 110 VAC.
The design delivers a system power factor of greater than 0.97, THD of
less than 10%, and easily meets EN61000-3-2 C. Designs can be scaled
from 75 W to 400 W, using the same platform, simply by choosing
different HiperPFS™
(PFC) and HiperLCS™
(LLC) family members and sizing power components appropriately.
RDK-292
requires fewer than 125 components to implement the driver’s PFC, LLC
and standby power supply circuits, resulting in low BOM cost and
exceptional reliability. The design utilizes a combination of Power
Integrations’ highly integrated HiperPFS
power-factor-correction IC and the HiperLCS
resonant converter IC, which together save up to 35 components compared
with conventional LLC solutions. HiperLCS
also permits the use of smaller magnetics and output filter capacitors
than typical LLC designs. The design incorporates a Qspeed™
merged PIN-Schottky diode as well, boosting CCM PFC efficiency by
delivering greatly reduced diode recovery losses when compared with
conventional ultrafast silicon PFC diodes.
For installations with remote lighting-control systems, the design
implements highly efficient standby power-supply functionality based on Power
Integrations’ LinkSwitch™-TN
ICs. The addition of a CAPZero™
X-capacitor discharge IC delivers further power savings, reducing
no-load consumption to around 800 mW at 264 VAC input.
Comments Andrew Smith, product marketing manager at Power
Integrations: “LED lighting can deliver significant cost savings for
municipalities and commercial/industrial enterprises, but these savings
cannot be fully realized without efficient, reliable, low-cost driver
circuits. Power
Integrations offers a full range of products – showcased in RDK-292
– to give designers of high-power LED lighting systems a strong
competitive edge.”
RDK-292
contains specification, schematic, BOM, transformer documentation, PCB
layout, and performance data. RDK-292
(www.powerint.com/rdk)
and RDR-292
(http://www.powerint.com/sites/default/files/PDFFiles/rdr292.pdf)
are available now on the Power Integrations website.
About Power Integrations
Power
Integrations, Inc., is a Silicon Valley-based supplier of
high-voltage integrated circuits and other high-voltage components used
in energy-efficient power conversion. The company’s innovative
technologies enable compact, reliable AC-DC power supplies for a vast
range of electronic products including mobile devices, TVs, PCs,
appliances, smart utility meters and LED lights. Since its introduction
in 1998, Power Integrations’ EcoSmart®
energy-efficiency technology has prevented billions of dollars’ worth of
energy waste and millions of tons of carbon emissions. Reflecting the
environmental benefits of the company’s products, Power Integrations’
stock is included in the NASDAQ® Clean Edge® Green
Energy Index, The Cleantech Index®, and the Ardour Global
IndexSM. For more information, including design-support tools
and resources, please visit www.powerint.com;
visit Power Integrations’ Green
Room for a comprehensive guide to energy-efficiency standards around
the world.
Power Integrations, HiperPFS, Qspeed, HiperLCS, LinkSwitch, CAPZero,
EcoSmart, and the Power Integrations logo are trademarks or registered
trademarks of Power Integrations, Inc. All other trademarks are the
property of their respective owners.
